Income Taxes (Activity Related To Our Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2022
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 24.0	$ 25.1	$ 26.8
Additions for current year tax positions	4.4	3.9	4.7
Additions for prior year tax positions	0.0	1.3	0.1
Reductions for prior year tax positions	0.0	(3.6)	(0.8)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0.0	1.3	0.0
Statute expirations	(10.5)	(1.3)	(5.0)
Foreign currency translation	(0.1)	(0.1)	(0.7)
Balance at end of year	$ 17.8	$ 24.0	$ 25.1